diff --git a/src/lib/text-template.hpp b/src/lib/text-template.hpp
index 6529229af..ef4307298 100644
--- a/src/lib/text-template.hpp
+++ b/src/lib/text-template.hpp
@@ -75,23 +75,39 @@ namespace lib {
           TEXT, KEY, COND, JUMP, ITER, LOOP
         };
       
+      /** cross-references by index number */
+      using Idx = size_t;
+      
       struct ParseCtx
         {
           Clause clause;
+          Idx begin{0};
+          Idx after{0};
         };
       
       struct Action
         {
-          Code code;
-          string val;
+          Code code{TEXT};
+          string val{""};
+          Idx refIDX{0};
+          
+          template<class IT>
+          string instantiate (IT&);
         };
       
-      template<class BIND>
-      struct Instance
+      /** Binding to a specific data source.
+       * @note requires partial specialisation */
+      template<class DAT, typename SEL=void>
+      struct InstanceCore
         {
-          
+          static_assert (not sizeof(DAT),
+                         "unable to bind this data source "
+                         "for TextTemplate instantiation");
         };
       
+      /** the text template is compiled into a sequence of Actions */
+      using ActionSeq = std::vector<Action>;
+      
       using PipeTODO = std::vector<string>;
       using InstanceIter = decltype (explore (std::declval<PipeTODO const&>()));
       
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 8ce262d16..4a9bc919f 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -112670,6 +112670,12 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 <node CREATED="1710809343987" ID="ID_1483329962" MODIFIED="1710809347034" TEXT="enum Code"/>
 <node CREATED="1710809347760" ID="ID_1225629738" MODIFIED="1710809361714" TEXT="struct ParseCtx"/>
 <node CREATED="1710810113497" ID="ID_1468035459" MODIFIED="1710810122668" TEXT="struct Action"/>
+<node CREATED="1710856965721" ID="ID_866140063" MODIFIED="1710856975344" TEXT="ActionSeq = vector&lt;Action&gt;">
+<node BACKGROUND_COLOR="#f8f1cb" COLOR="#a50125" CREATED="1710856991002" ID="ID_1648914815" MODIFIED="1710856998346" TEXT="Referenzen sind nicht stabil">
+<icon BUILTIN="messagebox_warning"/>
+</node>
+<node CREATED="1710857036363" ID="ID_1655406963" MODIFIED="1710857070451" TEXT="kein Problem &#x27f8; alle Verweise funktionieren per Index-Nr."/>
+</node>
 <node CREATED="1710809364702" ID="ID_1039397469" MODIFIED="1710809374320" TEXT="struct Instance&lt;Binding&gt;"/>
 </node>
 </node>
@@ -112815,6 +112821,35 @@ std::cout &lt;&lt; tmpl.render({&quot;what&quot;, &quot;World&quot;}) &lt;&lt; s
 </node>
 </node>
 </node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710856691780" ID="ID_763640380" MODIFIED="1710856698164" TEXT="Rahmen schaffen">
+<icon BUILTIN="flag-yellow"/>
+<node CREATED="1710856716918" ID="ID_1752947576" MODIFIED="1710856723204" TEXT="r&#xfc;ckw&#xe4;rts vorgehen">
+<icon BUILTIN="idea"/>
+</node>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1710856729291" ID="ID_1875406462" MODIFIED="1710859944223" TEXT="die Instantiierung erfolgt lazy &#x27f9; Iterator-Pipeline">
+<icon BUILTIN="pencil"/>
+<node CREATED="1710856916531" ID="ID_1047340326" MODIFIED="1710856926342" TEXT="die ActionSeq konsumieren"/>
+<node CREATED="1710857877562" ID="ID_707601175" MODIFIED="1710857911451" TEXT="Instantiierungs-Prozessor : function-mapping"/>
+<node CREATED="1710858136177" ID="ID_1016066994" MODIFIED="1710858673982" TEXT="logische Signatur des Einzelschrits: (Action, Binding, Ctx) &#x27fc; string"/>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1710858917164" ID="ID_1301011429" MODIFIED="1710859941873" TEXT="praktischer Ansatz: IterableDecorator &#xfc;ber DataBind">
+<icon BUILTIN="pencil"/>
+<node CREATED="1710859059558" ID="ID_878052078" MODIFIED="1710859508605" TEXT="das ist das konkrete Binding">
+<node CREATED="1710859078771" ID="ID_283747990" MODIFIED="1710859082314" TEXT="ist move-only"/>
+<node CREATED="1710859083131" ID="ID_1103676674" MODIFIED="1710859102540" TEXT="const- referenziert die Daten"/>
+<node CREATED="1710859106953" ID="ID_1570382274" MODIFIED="1710859128336" TEXT="implementiert das Binding-Concept"/>
+</node>
+<node CREATED="1710859515737" ID="ID_1401350564" MODIFIED="1710859521900" TEXT="enth&#xe4;lt eine DataSrc">
+<node CREATED="1710859523200" ID="ID_1772496628" MODIFIED="1710859542793" TEXT="diese referenziert die Daten"/>
+<node CREATED="1710859544029" ID="ID_1522505977" MODIFIED="1710859550400" TEXT="ist aber assignable"/>
+<node CREATED="1710859551122" ID="ID_602535289" MODIFIED="1710859562631" TEXT="und implementiert die Binding-Funktionalit&#xe4;t"/>
+</node>
+<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1710859064221" ID="ID_190332829" MODIFIED="1710859956662" TEXT="h&#xe4;lt au&#xdf;erdem einen DataSrc::Iter">
+<icon BUILTIN="flag-pink"/>
+</node>
+</node>
+</node>
+<node CREATED="1710856784967" ID="ID_201927694" MODIFIED="1710856798759" TEXT="Parsing soll eager sein (wegen Syntax-Fehlern)"/>
+</node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1710793352301" ID="ID_1691061928" MODIFIED="1710793355254" TEXT="Bindings">
 <icon BUILTIN="flag-yellow"/>